378099233 has 4 divisors (see below), whose sum is σ = 378186900. Its totient is φ = 378011568.

The previous prime is 378099229. The next prime is 378099247. The reversal of 378099233 is 332990873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 332990873 = 197 ⋅1690309.

It can be written as a sum of positive squares in 2 ways, for example, as 131515024 + 246584209 = 11468^2 + 15703^2 .

It is a cyclic number.

It is not a de Polignac number, because 378099233 - 2² = 378099229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378099223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37010 + ... + 46107.

It is an arithmetic number, because the mean of its divisors is an integer number (94546725).

Almost surely, 2^378099233 is an apocalyptic number.

It is an amenable number.

378099233 is a deficient number, since it is larger than the sum of its proper divisors (87667).

378099233 is an equidigital number, since it uses as much as digits as its factorization.

378099233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87666.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 378099233 is about 19444.7739251450. The cubic root of 378099233 is about 723.1059450520.

The spelling of 378099233 in words is "three hundred seventy-eight million, ninety-nine thousand, two hundred thirty-three".